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Method for extracting fish brain oil by using alkaline process

A technology of alkaline extraction and cod brain oil, which is applied in the field of cod brain oil alkaline extraction technology, can solve the problems of unsuitability for industrial production application and complex cod brain oil extraction process, so as to increase the added value of products and improve market competitiveness , the effect of improving the utilization rate

Pending Publication Date: 2015-12-23
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art, the refining process of cod brain oil is too complicated and not suitable for industrial production and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The fish brain was taken out from the head of fresh silver carp, homogenized, adjusted to pH 8 by adding KOH, and hydrolyzed at 85°C for 60 minutes. Add 3% KCl, continue heat preservation and salting out for 10 minutes, centrifuge at 5000 r / min for 15 minutes, the upper layer is clear, and the transparent light yellow liquid is cod brain oil, and the measured iodine value is 121g / 100g.

[0022] Put the extracted silver carp naphtha oil into a hydrogenation reactor, and add 0.04% palladium catalyst. Then react at a reaction temperature of 120° C., a reaction pressure of 0.1 MPa and a stirring rate of 100 r / min for 10 minutes to obtain hydrogenated fish brain oil; after the reaction, remove the catalyst and decolorize the obtained hydrogenated fish brain oil at 100° C. for 20 minutes with activated clay 1. Molecular distillation and deodorization to obtain purified cod brain oil product, which has been proved to have no fishy smell by heating test and storage test, and th...

Embodiment 2

[0024] The fish brain was taken out from the head of fresh silver carp, homogenized, adjusted to pH 8 by adding KOH, and hydrolyzed at 85°C for 60 minutes. Add 3% KCl, continue heat preservation and salting out for 15 minutes, centrifuge at 4000 r / min for 20 minutes, the upper layer is clear, and the transparent light yellow liquid is cod brain oil, and the measured iodine value is 119g / 100g. Put the extracted silver carp naphtha oil into a hydrogenation reactor, and add 0.04% palladium catalyst. Then react at a reaction temperature of 130° C., a reaction pressure of 0.1 MPa and a stirring rate of 200 r / min for 15 minutes to obtain hydrogenated fish brain oil; after the reaction is completed, the obtained hydrogenated fish brain oil is decolorized at 100° C. for 30 minutes by removing the catalyst and activated clay 1. Molecular distillation and deodorization to obtain purified cod brain oil product, which has been proved to have no fishy smell by heating test and storage test...

Embodiment 3

[0026] The fish brain was taken out from the head of fresh silver carp, homogenized, adjusted to pH 8 by adding KOH, and hydrolyzed at 85°C for 60 minutes. Add 7% KCl, keep warm and salt out for 15 minutes, centrifuge at 4000r / min for 20 minutes, the upper layer is clear, and the transparent light yellow liquid is cod brain oil, and the measured iodine value is 122g / 100g. Put the extracted silver carp naphtha oil into a hydrogenation reactor, and add 0.04% palladium catalyst. Then react at a reaction temperature of 120° C., a reaction pressure of 0.1 MPa and a stirring rate of 300 r / min for 15 minutes to obtain hydrogenated fish brain oil; after the reaction is completed, the obtained hydrogenated fish brain oil is decolorized at 100° C. for 25 minutes by removing the catalyst and activated clay 1. Molecular distillation and deodorization to obtain purified cod brain oil product, which has been proved to have no fishy smell by heating test and storage test, and the iodine valu...

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Abstract

The invention discloses a method for extracting fish brain oil by using an alkaline process. The method comprises the steps of extracting brains by taking fish brains as raw materials, hydrolyzing by using potassium hydroxide after homogenizing, and centrifuging after salting out to obtain the fish brain oil and comprises the concrete steps of alkaline hydrolysis, namely regulating the pH value of the homogenized freshwater fish brains to 7.5-9.5 by using potassium hydroxide, and hydrolyzing at the temperature of 70-90 DEG C for 40-70 minutes; salting out, namely salting out for 5-20 minutes by using 1-7% potassium chloride; and centrifuging, namely centrifuging at the rotating speed of 4000-5000r / min for 10-20 minutes, and extracting an upper layer to obtain the fish brain oil. The method for extracting the fish brain oil is low in cost, simple in operation, safe, environment-friendly and efficient, and the problem of excessive omega-3 / omega-6 hydrolysis easily caused by traditional sodium hydroxide hydrolysis is avoided.

Description

technical field [0001] The invention relates to a method for extracting fish brain substances, in particular to an alkaline extraction process for fish brain oil. Background technique [0002] my country is a large fishery country in the world, and its fishery output has ranked first in the world for more than ten years in a row, showing a trend of increasing year by year. With the development of technology, the improvement of people's living standards and the change of consumption habits, consumers' demand for aquatic products has gradually diversified, from fresh products to convenience, nutrition and functionalization, which have vigorously promoted the aquatic product processing industry . During fish processing, a large amount of leftovers are produced, and its weight accounts for about 40% to 55% of the raw fish. If it is not treated effectively, it will not only waste resources, but also pollute the environment. At present, the level of comprehensive utilization of...

Claims

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Application Information

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IPC IPC(8): C11B1/00
Inventor 夏文水王彩霞姜启兴许艳顺许学勤于沛沛
Owner JIANGNAN UNIV
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